Birds are animals which can hear the young inside the egg as they are near full development. As they are completing development they become very active within the egg. Some birds, such as chickens, are precocious, fully feathered, and basically come out of the egg running. Some birds, such as parrots, are born unfeathered, in a more helpless/needy state, and need to be fed by the parents during development for a period of time after hatching.
When the birds hatch they have a special structure on their beak called an "egg tooth" which enables them to crack their way out of the shell. When they begin to hatch and start tapping their way out this is very audible (even to humans).
As the chicks near full development in the egg, they can also hear their "parents" outside the egg as well.
Tiger
Turtle birds
Turtle
Dogs can hear extremely quiet sounds. Another animal that is capable of hearing sounds inaudible to humans are dolphins and bats.
normally geckos
How is animal hearing different then humans?
The sounds animals can hear is based on the frequency that the certain animal can hear. For example, dog's can hear at much higher frequencies then humans can, so if a sound is made that is above our capability of hearing, we will not hear the sound, but the dog will.
A Pigeon has the lowest hearing Frequency at .1 Hz.
YES, yes we do. you see, most young do not know this, but others hear your voice different then you hear it. don't take this the wrong way. you do hear your voice correctly. look it up on answers.com, but there is an answer that tells about how it happens.
Jack Frost was said to hear low pitch animal noises from miles away so he is the "animal" that can hear the lowest pitch
You ought not to hear what they are saying about you behind your back.
deer
If a person or animal cannot hear, they are said to be 'deaf'.
whale can hear ultrasonic sound waves.
to hear their predators creeping up on them,to hear their prey
Animal noises
20000
canines.they hear sounds we can't hear at all,but to them they are painful.
Dogs can hear extremely quiet sounds. Another animal that is capable of hearing sounds inaudible to humans are dolphins and bats.
a bat does